For Integration with Spark Plugs/Ignition Coils, Glow Plugs and Fuel Injectors

Miniature Size 2.8mm (0.11") Diameter Diaphragm
Fiber Optic, EMI-Free Construction
Maximum Operating Temperature 350°C (~660°F)
High Accuracy under Combustion Conditions
Neither Water nor Air Cooling Needed
Available in AutoPSI-S Version
Long-Life, Low-Cost
Due to its fiber-optic construction the sensor is inherently non-electric, free from Electro-Magnetic Interference (EMI), and resistant to high temperature. Thanks to the exceptionally small size the sensor fits modified production spark plugs, for non-intrusive pressure measurement in engine testing and R&D, without compromising spark plug characteristics.

For OEM applications the sensor can be integrated with "Smart" Ignition Systems, Glow Plugs, and Direct Fuel Injectors, where combustion pressure is used as a feedback parameter for engine control. Custom sensor packages and connectors are available on request.

Pressure Range0-100 bar (~1,500 psi)
Over Pressure200 bar (~3,000 psi)
Non-Linearity & Hysteresis±1% FS (when installed in PSIplug)
Diaphragm Resonant Frequency>120kHz
Frequency Range0.1Hz to 15kHz
Sensor Housing Temperature Range-40° to 350°C
Fibe-Optic Cable Operating Temperature-40° to 200°C
Fiber-Optic Cable Length2m (6.5') Standard; Custom Length Optional
Signal ConditionerIntegrated with Sensor; Metal Shell (length 3", dia. 1")
Sensor Operational ModeSealed Gauge
Fiber-Optic Cable Minimum Bending Radius5mm (5/16")
Sensor Output SignalAnalog, 0.5 to 5V
Diagnostic Output SignalAnalog, 0 to 3.6V
Power Supply9 to 18V DC, 85mA; (not included)
Signal Conditioner Operating Temperature Range-20°C to 65°C
Pressure MediaGaseous or Liquid
Thread SizeM3.5x0.6 thread
Guaranteed Lifetime200 Million Pressure Cycles or 2 Years
2.8mm Sensor Applications